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Analog Devices Inc./Maxim Integrated MAX3353EEUE+
- Part No.:
- MAX3353EEUE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Special Purpose Regulators
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX3353EEUE+.pdf
- Description:
- IC REG CHRG PMP USB 2OUT 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,353
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Product details
Overview
MAX3353EEUE+ from Maxim Integrated is a USB On-the-Go (OTG) regulated charge pump IC with integrated switchable pullup/pulldown resistors, I²C-compatible control interface, and ±15kV ESD protection on VBUS, ID_IN, D+, and D−. It enables dual-role USB OTG functionality in low-voltage systems (VL = +1.65V to VCC), supports SRP/HNP protocols, delivers 8mA VBUS output at 4.63–5.25V, and operates from VCC = +2.6V to +5.5V. It is used in mobile phones and digital cameras to eliminate host PC dependency during peripheral interconnection.
For engineers reviewing the MAX3353EEUE+ datasheet, MAX3353EEUE+ pinout, MAX3353EEUE+ application, or MAX3353EEUE+ equivalent, this page provides verified technical context for USB OTG session management, VBUS power control, I²C register-based configuration, and dual-role device signaling-critical for embedded USB OTG transceiver integration in battery-powered portable electronics.
Technical Context
The MAX3353EEUE+ implements a regulated flying-capacitor charge pump delivering OTG-compliant VBUS (4.63–5.25V, 8mA) from input VCC as low as +2.6V. Its internal comparators monitor VBUS_VALID (4.40–4.63V), SESSION_VALID (1.0–1.8V), and B_SESSION_END (0.4–0.6V) thresholds to support Session Request Protocol (SRP) and Host Negotiation Protocol (HNP).
It integrates programmable 1.425–1.575kΩ D+/D− pullup resistors and 14.25–15.75kΩ pulldown resistors, controlled via I²C registers, alongside an ID detector, level-shifted SDA/SCL/INT/ID_OUT interface (VL-referenced), and autoconnect/autoresponse logic for timing-critical HNP handshaking without firmware intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply Range | +2.6V to +5.5V - Enables operation from single Li-ion or dual-cell alkaline supplies without external LDO. |
| VBUS Output Voltage | 4.63V to 5.25V at 0–8mA - Meets USB OTG VBUS specification for reliable bus enumeration and power delivery. |
| VBUS Output Current | 8mA min - Sufficient to drive USB OTG session initiation and sustain signaling during SRP/HNP negotiation. |
| D+/D− Pullup Resistance | 1.425kΩ to 1.575kΩ - Matches USB 1.1/2.0 peripheral pullup tolerance for compliant device detection. |
| I²C Clock Frequency | Up to 400kHz - Supports fast register read/write for real-time OTG role switching and status monitoring. |
| ESD Protection | ±15kV HBM on VBUS, ID_IN, D+, D− - Eliminates need for external TVS diodes in handheld consumer designs. |
| Operating Temperature | −40°C to +85°C - Qualified for industrial-grade portable electronics including smartphones and digital cameras. |
Pinout & Package
MAX3353EEUE+ is housed in a 16-pin TSSOP package (5.0mm × 4.4mm, 0.65mm pitch), optimized for space-constrained portable PCBs. Pin functions are electrically validated per Maxim's official datasheet Rev 1 (10/03).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 1) | Charge-pump power input | Supplies regulated VBUS; requires 1µF bypass capacitor to GND for stable pumping operation. |
| VL (Pin 2) | Logic supply reference | Sets I²C interface voltage thresholds (VIH = 0.67×VL, VOL ≤ 0.4V); supports 1.65V–VCC logic levels. |
| SDA (Pin 3) | I²C bidirectional data line | Open-drain or push-pull configurable; level-shifted to VL for interfacing with low-voltage microcontrollers. |
| ADD (Pin 4) | I²C slave address select | Internal 110kΩ pulldown sets default I²C address; tied high to change address for multi-device buses. |
| SCL (Pin 5) | I²C clock input | Accepts up to 400kHz clock; tolerant of voltages >VL, enabling mixed-voltage system integration. |
| INT (Pin 6) | Active-low interrupt output | Signals VBUS_VALID, SESSION_VALID, or SESSION_END events; configurable open-drain or push-pull. |
| ID_OUT (Pin 7) | Level-translated ID status | VL-referenced mirror of ID_IN state; indicates A-device (GND) or B-device (floating) role to host controller. |
| VTRM (Pin 8) | USB termination supply | +3.0V to +3.6V input for internal 1.5kΩ D+/D− pullups; decoupled with 0.1µF capacitor. |
| D− (Pin 9) | USB differential data (−) | ±15kV ESD protected; connected to switchable 1.5kΩ pullup or 15kΩ pulldown per OTG role. |
| D+ (Pin 10) | USB differential data (+) | ±15kV ESD protected; higher-priority pullup prevents bus contention when both D+/D− switches active. |
| ID_IN (Pin 11) | OTG device ID input | Internally pulled up to VCC; floating = B-device, grounded = A-device; level-shifted to VL at ID_OUT. |
| N.C. (Pin 12) | No connection | Not bonded; must remain unconnected to avoid parasitic coupling or EMI. |
| GND (Pin 13) | Analog/digital ground | Single-point return for VCC, VL, VTRM, and USB signals; critical for noise-free comparator operation. |
| C− (Pin 14) | Charge-pump flying capacitor (−) | Connects to negative terminal of 0.1µF ceramic flying capacitor; layout symmetry minimizes ripple. |
| C+ (Pin 15) | Charge-pump flying capacitor (+) | Connects to positive terminal of 0.1µF ceramic flying capacitor; forms switched-capacitor doubler stage. |
| VBUS (Pin 16) | OTG bus power output | Delivers regulated 5V to USB port; supports backdrive up to +6V; requires 1µF minimum bypass capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| Regulated charge pump | Generates stable 4.63–5.25V VBUS from +2.6V VCC input, enabling USB OTG operation in low-voltage battery systems. |
| Switchable D+/D− resistors | Individually controllable 1.425kΩ pullups and 14.25kΩ pulldowns via I²C registers-no external resistors needed for OTG role switching. |
| Integrated VBUS comparators | Three precision comparators (VBUS_VALID, SESSION_VALID, B_SESSION_END) enable autonomous SRP/HNP state detection without MCU polling. |
| I²C-compatible control interface | 400kHz 2-wire bus with address-select pin (ADD) allows daisy-chaining multiple MAX3353EEUE+ devices on one controller. |
| Autoconnect and autoresponse logic | Hardware-accelerated HNP signaling: automatic D+ pullup assertion (A-device) and SE0 generation (B-device) within defined timing windows. |
| ±15kV ESD protection | Fully protects VBUS, ID_IN, D+, and D− pins per Human Body Model-reduces BOM count and board area in consumer handhelds. |
Applications
| Mobile Phone OTG Adapter | Digital Camera Direct Print |
|---|---|
|
Use Scenario: Smartphone acts as USB host to connect to flash drives or keyboards via OTG cable. IC Role / Device Role / Timing Role: MAX3353EEUE+ supplies VBUS, detects ID_IN state to determine A/B role, and asserts D+ pullup to signal host capability within <1ms. Use Value: Enables seamless host-peripheral role negotiation without firmware delay, supporting USB 2.0 full-speed enumeration. |
Use Scenario: Digital camera connects directly to USB photo printer without PC intermediary. IC Role / Device Role / Timing Role: MAX3353EEUE+ monitors VBUS for session validity and triggers INT on SESSION_VALID transition to initiate print handshake. Use Value: Guarantees reliable session establishment under variable load conditions, meeting USB OTG Supplement v1.0 timing requirements. |
| MP3 Player File Transfer | PDAs Peripheral Docking |
|
Use Scenario: MP3 player transfers music files to USB mass storage device using OTG mode. IC Role / Device Role / Timing Role: MAX3353EEUE+ executes SRP by pulsing VBUS via internal current source (VBUS_CHG1), driving 13µF load >2.1V within 90ms. Use Value: Self-timed VBUS pulse ensures compliance with PC-safe SRP limits (<2.0V into 96µF), preventing host port damage. |
Use Scenario: PDA docks into cradle acting as USB host to sync with peripherals like barcode scanners. IC Role / Device Role / Timing Role: MAX3353EEUE+ provides level-shifted ID_OUT and INT outputs to PDA's 1.8V GPIO, enabling real-time role arbitration. Use Value: VL-referenced interface eliminates external level translators, reducing component count and power consumption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB OTG charge pump applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX3353EEBP-T | Same die, 5×4 UCSP package (B20-4); 0.4mm pitch, 1.6mm² footprint vs. TSSOP's 22mm². | Targeted for ultra-compact wearables or hearing aids where PCB area is constrained. | Select MAX3353EEBP-T only if board space is critical and reflow profile supports UCSP assembly. |
| TPS650532RGER | Triple-output PMIC with integrated USB OTG charge pump (5V/500mA), but lacks switchable D+/D− resistors and ID detection. | Requires external pullup/pulldown resistors and GPIO-based ID sensing; suited for systems with dedicated USB PHY. | Choose TPS650532RGER only when additional DC/DC rails (1.2V/1.8V/3.3V) are needed alongside VBUS, and discrete resistor routing is acceptable. |
Compared with MAX3353EEUE+, the MAX3353EEBP-T offers identical electrical performance in a miniature chip-scale package, while the TPS650532RGER trades integrated OTG signaling for broader power management-making MAX3353EEUE+ optimal for cost-sensitive, function-specific OTG add-on modules.
Availability
MAX3353EEUE+ is available at Aetrix Electronics and suitable for mobile phone OTG adapters, digital camera direct-print interfaces, MP3 player file transfer systems, PDAs peripheral docking, and photo printers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX3353EEUE+ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.
The MAX3353E product line was designed specifically to simplify USB On-the-Go implementation in portable electronics by integrating charge pumping, role detection, and bus signaling into a single compact IC-reducing design complexity and bill-of-materials cost.
FAQ
What is the primary function of the MAX3353EEUE+ in a USB OTG system?
The MAX3353EEUE+ serves as a dedicated USB OTG companion IC that generates regulated VBUS power, manages D+/D− pullup/pulldown resistors for host/peripheral role identification, detects ID_IN state to determine A/B device role, and supports SRP/HNP protocols via integrated comparators and interrupt logic. It enables low-voltage portable devices to operate as dual-role USB hosts or peripherals without requiring a PC.
Does the MAX3353EEUE+ require external pullup resistors on D+ and D− lines?
No, the MAX3353EEUE+ integrates switchable 1.425kΩ pullup and 14.25kΩ pulldown resistors on both D+ and D− lines, controlled via I²C registers. These meet USB 2.0 OTG specifications and eliminate the need for external discrete resistors-reducing PCB area, BOM count, and potential layout errors in space-constrained designs.
How does the MAX3353EEUE+ support Session Request Protocol (SRP)?
The MAX3353EEUE+ supports SRP through its self-timed VBUS pulsing feature: setting VBUS_CHG1 = 1 activates an internal current source that pulses VBUS to >2.1V into a 13µF load within 90ms (for A-device detection) while limiting voltage to <2.0V into a 96µF load (to protect PC hosts). This complies with USB OTG Supplement v1.0 SRP requirements without MCU timing overhead.
What is the significance of the VL pin on the MAX3353EEUE+?
The VL pin on the MAX3353EEUE+ sets the logic reference voltage for SDA, SCL, INT, and ID_OUT signals, allowing interoperability with low-voltage microcontrollers (1.65V–VCC). It defines VIH (0.67×VL) and VOL (≤0.4V), enabling direct connection to 1.8V or 2.5V system logic without external level shifters-critical for power-efficient portable designs.
Can the MAX3353EEUE+ operate with a VCC supply below 3.0V?
Yes, the MAX3353EEUE+ operates with VCC as low as +2.6V while still delivering a compliant 4.63–5.25V VBUS output at 8mA. This capability allows direct integration with single-cell Li-ion batteries (2.7–4.2V) or two-cell alkaline supplies, eliminating the need for intermediate boost converters in battery-powered OTG accessories.
MAX3353EEUE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Applications:
- Charge Pump, USB
- Voltage - Input:
- 2.6V ~ 5.5V
- Number of Outputs:
- 2
- Voltage - Output:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
MAX3353EEUE+ FAQ
1.How can I place an order for MAX3353EEUE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX3353EEUE+ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX3353EEUE+ reliable?
The price and inventory of MAX3353EEUE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX3353EEUE+ is usually 5 days.
3.What payment methods are accepted for MAX3353EEUE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX3353EEUE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX3353EEUE+?
MAX3353EEUE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX3353EEUE+ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX3353EEUE+?
For technical support, including MAX3353EEUE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX3353EEUE+ requirements.
6.How does Aetrix verify that MAX3353EEUE+ is sourced from the original manufacturer or authorized distributors?
All MAX3353EEUE+ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX3353EEUE+ meets industry standards.
7.What is the process for return or replacement of MAX3353EEUE+?
All MAX3353EEUE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX3353EEUE+, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX3353EEUE+ part is unused and in its original packaging.
Return procedure for MAX3353EEUE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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